Scinai Announces New Peer-Reviewed Publication Supporting PC111 as a Disease-Modifying Therapy for Pemphigus and SJS/TEN

New data builds on award-winning research and confirms efficacy and safety of PC111 across in-vitro, ex-vivo, and in-vivo humanized models

JERUSALEM,July 29, 2025/PRNewswire/ -- Scinai Immunotherapeutics Ltd. (Nasdaq:SCNI), a biopharmaceutical company developing inflammation and immunology (I&I) biological products and providing boutique CDMO services, announced the publication of a new peer-reviewed article in the Journal of Dermatological Treatment validating the disease-modifying potential of PC111, a first-in-class human anti-Fas Ligand monoclonal antibody.

Building upon prior ex vivo studies, the research introduces new data from a proprietary humanized FasL mouse model, in which PC111 significantly reduced disease activity. Collectively, the data confirms PC111's unique, non-immunosuppressive mode of action: acting locally at the keratinocyte level and downstream of the immune system.

In addition to pemphigus, the authors highlight PC111's promise in SJS/TEN, a life-threatening dermatological emergency. Preclinical models show PC111 prevents FasL-mediated keratinocyte apoptosis and ocular damage, indicating potential for early intervention in this high-mortality condition.

Current treatments for pemphigus and SJS/TEN rely on chronic, systemic immunosuppression. In pemphigus, this typically includes steroids and Rituximab, which are slow-acting and associated with serious side effects. Other approaches—including BTK and FcRn inhibitors—have failed in late-stage development.

By targeting the final step in disease pathology rather than suppressing the immune system, PC111 offers a differentiated, fast-acting, and safer therapeutic profile. Combined, the two indications represent an annual market opportunity exceedingone billion dollars.

Subject to Scinai's exercise of its option to acquire Pincell, the two companies plan to advance PC111 through IND-enabling studies and into clinical development. PC111 has already been granted orphan drug designation in the EU, and a similar status will be pursued also in the U.S. The two companies are exploring accelerated approval pathways that could allow market entry within approximately three to four years.

Scinai and Pincell have embedded several strategic advantages into the PC111 program:

"This new publication further validates our conviction that PC111 has the potential to transform the treatment landscape for pemphigus and SJS/TEN," saidAmir Reichman, CEO of Scinai. "The scientific leadership and development expertise of the Pincell's team have been instrumental, and with their expected integration into Scinai upon exercise of the option, we are well positioned to advance PC111. With strong science, regulatory clarity, and substantial market potential, we believe PC111 can deliver life-changing benefits to patients, and meaningful value to shareholders."

Scinai Immunotherapeutics Ltd. (NASDAQ:SCNI) is a biopharmaceutical company with two complementary business units: one focused on in-house development of inflammation and immunology (I&I) biological therapeutic products, starting with an innovative, de-risked pipeline of nanosized VHH antibodies (nanoAbs) targeting diseases with large unmet medical needs; and the other, a boutique CDMO providing biological drug development, analytical methods development, clinical cGMP manufacturing, and pre-clinical and clinical trial design and execution services for early-stage biotech drug development projects.

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This press release contains forward-looking statements within the meaning of the Private Litigation Reform Act of 1995. Words such as "expect," "believe," "intend," "plan," "continue," "may," "will," "anticipate," and similar expressions are intended to identify forward-looking statements. All statements, other than statements of historical facts, are forward-looking statements. These forward-looking statements reflect management's current views with respect to certain current and future events and are subject to various risks, uncertainties and assumptions that could cause the results to differ materially from those expected by the management of Scinai Immunotherapeutics Ltd. Risks and uncertainties include, but are not limited to  the risk that Scinai will be unable to exercise its option to acquire Pincell; that Scinai may be required to resell its shares in Pincell to the previous shareholders under certain conditions; a delay in the market entry of Pincell; the risk that the annual addressable market of PC111 will be lower than anticipated; the risk that Scinai may be unable to remain compliant with the continued listing requirements of Nasdaq; failure to sign agreements with other potential clients of the CDMO business; a delay in the commencement and results of pre-clinical and clinical studies, including the Phase 1/2a study for psoriasis, the risk of delay in, Scinai's inability to conduct, or the unsuccessful results of, its research and development activities, including for PC111 or the contemplated in-vivo studies and a clinical trial; the risk that Scinai will not be successful in-licensing other nanoAbs; the risk that Scinai may not be able to secure additional capital on attractive terms, if at all; the risk that the therapeutic and commercial potential of nanoAbs or PC111 will not be met or that Scinai will not be successful in bringing the nanoAbs or PC111 towards commercialization; the risk of a delay in the preclinical and clinical trials data for nanoAbs or PC111, if any; the risk that our business strategy may not be successful; Scinai's ability to acquire rights to additional product opportunities; Scinai's ability to enter into collaborations on terms acceptable to Scinai or at all; timing of receipt of regulatory approval of Scinai's manufacturing facility inJerusalem, if at all or when required; and the risk that drug development involves a lengthy and expensive process with uncertain outcomes. More detailed information about the risks and uncertainties affecting the Company is contained under the heading "Risk Factors" in the Company's Annual Report on Form 20-F filed with the Securities and Exchange Commission ("SEC") onMay 7, 2025, and the Company's subsequent filings with the SEC. Scinai undertakes no obligation to revise or update any forward-looking statement for any reason.

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